Which two statements about fast SSID changing on a WLC are true? (Choose two.)

A.
It enables a controller to rapidly cycle its SSID to drop rogue connections.

B.
It enables a client to move to a new SSID before its previous entry in the
controller connection table is cleared.

C.
If it is disabled while clients are connected to the controller, the client loses
communication with other hosts in the same VLAN.

D.
If it is disabled while clients are connected to the controller, the client loses
communication with hosts in other VLANs.

E.
It enables a client to move faster between SSIDs

F.
It enforces MIMO on clients.

Explanation:
http://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/b_cg74_CONSOLIDATED_chapter_01001.htmlInformation About Configuring Fast SSID Changing
When fast SSID changing is enabled, the controller allows clients to move faster between SSIDs. When fast SSID is enabled, the client entry is not cleared and the delay is
not enforced.
When fast SSID changing is disabled, the controller enforces a delay before clients are
allowed to move to a new SSID. When fast SSID is disabled and the client sends a new
association for a different SSID, the client entry in the controller connection table is
cleared before the client is added to the new SSID.
Configuring Fast SSID Changing (GUI)
Step 1 Choose Controller to open the General page.
Step 2 From the Fast SSID Change drop-down list, choose Enabled to enable this feature or Disabled to disable it. The default value is disabled.
Step 3 Click Apply to commit your changes.
Step 4 Click Save Configuration to save your changes.
Configuring Fast SSID Changing (CLI)
Step 1 Enable or disable fast SSID changing by entering this command:
config network fast-ssid-change {enable | disable}
Step 2 Save your changes by entering this command: save config